import html2Canvas from 'html2Canvas'
import JsPDF from 'jspdf'
import {Indicator} from 'mint-ui'
// import localforage from 'localforage'
// import getFile from './getFile'

export default {
  install (Vue, options) {
    Vue.prototype.getPdf = function (title) {
      Indicator.open({
        text: '转换中...',
        spinnerType: 'fading-circle'
      })
      html2Canvas(document.querySelector('#pdfDom'), {
        allowTaint: true
        // onrendered: function (canvas) {
        //   let contentWidth = canvas.width
        //   let contentHeight = canvas.height
        //   let pageHeight = contentWidth / 592.28 * 841.89
        //   let leftHeight = contentHeight
        //   let position = 0
        //   let imgWidth = 595.28
        //   let imgHeight = 592.28 / contentWidth * contentHeight
        //   let pageData = canvas.toDataURL('image/jpeg', 1.0)
        //   let PDF = new JsPDF('', 'pt', 'a4')
        //   if (leftHeight < pageHeight) {
        //     PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
        //   } else {
        //     while (leftHeight > 0) {
        //       PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
        //       leftHeight -= pageHeight
        //       position -= 841.89
        //       if (leftHeight > 0) {
        //         PDF.addPage()
        //       }
        //     }
        //   }
        //   PDF.save(title + '.pdf')
        // }
      }).then(function (canvas) {
        let contentWidth = canvas.width
        let contentHeight = canvas.height
        let pageHeight = contentWidth / 592.28 * 841.89
        let leftHeight = contentHeight
        let position = 0
        let imgWidth = 595.28
        let imgHeight = 592.28 / contentWidth * contentHeight
        let pageData = canvas.toDataURL('image/jpeg', 1.0)
        let PDF = new JsPDF('', 'pt', 'a4')
        if (leftHeight < pageHeight) {
          PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
        } else {
          while (leftHeight > 0) {
            PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
            leftHeight -= pageHeight
            position -= 841.89
            if (leftHeight > 0) {
              PDF.addPage()
            }
          }
        }
        // let blob = PDF.output('datauristring')
        Indicator.close()
        // window.pdfAsDataUri = blob
        // window.location.href = '#/pdfShow'
        // localforage.setItem('_imgUrl', blob, function () {
        //   localforage.getItem('_imgUrl', function () {
        //     window.location.href = '#/pdfShow'
        //     // window.location.href = 'static/pdf/web/viewer.html'
        //   })
        // })
        // localforage.setItem('_imgUrl', blob).then(data => {
        //   console.log(data)
        // window.location.href = 'static/pdf/web/viewer.html'
        // window.location.href = '#/pdfShow'
        // })
        // localforage.getItem('_imgUrl').then(data => {
        // console.log(data)
        // window.location.href = 'static/pdf/web/viewer.html'
        // })
        // window.location.href = 'static/pdf/web/viewer.html'
        // if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
        //   let blob = PDF.output('datauristring')
        //   getFile.getFile(blob)
        //   // let binaryData = new Blob([blob], {type: 'pdf/plain;charset=utf-8'})
        //   // window.open(URL.createObjectURL(binaryData))
        //   // window.location.href = blob
        // } else {
        //   PDF.save(title + '.pdf')
        // }
        PDF.save(title + '.pdf')
      })
    }
  }
}
